Grain-grader.



No. 825,390. PATENTED JULY l0, 1906. N. L. HILL. GRAIN GRADER.

APPLIOATON FILED JULY 25.1905.

2 SHEETS-SHEET 1.

Attorneys 1HE Nokms Pnsns co., wAsmNcran. n. c

PATENTED JULY 10, 1906.

N. L. HILL. GRAIN GRADLR. APPLIGTION FILED JULY 25.1905.

2 SHEETS-SHEET 2.

` Wim Inventor Attorneysl vent-ion and without departing from the NITEI) STATES PATENT UFFICI). NATHANIEL L. HiLL, oF RocHEsfER MILLS, PENNSYLVANIA. GRAIN-GRADER.

1i! O 825 390. y S ecicaton of Letters Patent. Patented Jul 10, 1906.

Application filed July 25.1905. Serial No. 271,238.

To all whom it' may concern:

Be it known that I, NATHANIEL L. HILL, a is connect-ed by a pitman 11 with one arm 12 citizen of the United States, residing at of a bell-crank lever B, which is fulcrumed Rochester Mills, in the county of Indiana and upon one of the posts 2. 6o State of Pennsylvania, have invented a new The posts 1 1 are provided with bearings and useful Grain-Grader, of which the followfor a rock-shaft 13, having an upwardly-exing is aspeeification. tending crank portion 1.4, which pivotally This invention relates to devices for cleanl supports the front end of the casing of the ing, purifying, and grading grain; and it has cleaning-screen 15. The latter is inclined in 6: for its `object to simplify and improve the a downward and rearward direction and is construction and operation of this class of deslidably supported upon the casing 17 of the vices. chanting-screen 18, which latter is likewise in- WIith these and other ends in view, which clined downwardly and rearwardly, although will readily appear as the nature of the into a less degree than the inclination of the 7o vention is better understood, the same conscreen 15. The portion of the casing 17 sists in the improved construction and novel which extends under the cleaning-screen 15 arrangement and combination of parts, constitutes a box or casing to receive the which will be hereinafter fully described, and cockle-seed and small grain whichis separated particularly pointed out in the claims. through the screen 1 said box or casing be- 75 In the accompanying drawings has been ing provided at its lower end with an outlet illustrated a simple and preferred form of the 19, having a spout 20, which extends throu h invention, it being, however, understood that an opening 21 in the adjacent side of the no limitation is necessarily made to the pre` casing. oise structural details therein exhibited, but The upper end of the screen-casing' 17 is 8o that the right is reserved to any changes', pivotally connected with the central portion alterations, and modifications to which reof a cross-bar 16 in the casing, said cross-bar course may be had within the scope of the inhaving a pin 16 engaging a loop or eye 17 upon the screen-casing. The lower end of the screen-casing 17 is suspended by means 8 5 of links 22 from a cross-piece 23, which connects the upper ends of the posts 2 2. Said screen-casing is also connected by means of a link 24 with an arm 25 of the bell-crank lever B. 9o

The posts 1 1 and 2 2 are provided with bearings for shafts 26 and 27, having upwardly-extending cranks 28 29, which serve to support a downwardly and forwardly inclined frame or casing 29, carrying the grad- 95 ing-screen 30.

The rock-shafts 13 and 26 are each provided with an arm, designated, respectively, 31 and 32, each of said arms being provided with perforations 33. The pitman 11 is roo provided with a cross-arm 34, the upper and lower ends of which are connected, respectively, by means of links 35 and 36 with the arms 31 and 32, so that when the machine is in operation oscillatory movement will be 105 imparted to the said rock-shafts, and the screens 15 and 30 will thereby be moved or reciprocated longitudinally of the frame of the machine, the extent of the throw being capable of regulation by adjusting the con- 11o nection of the links 35 and 36 with the arms of power. One end of the shaft 8 carries a l 31 and 32. At the same time the pitman ll spirit or sacrificing the efficiency of the same.

In said drawings, Figure 1 is a perspective view of a machine constructed in accordance with the principles of the invention, the entire casing having been removed for the purpose of exposing the interior construction. Fig. 2 is a side elevation showing the machine complete. Fig. 3 is a transverse sectional detail view. Fig. 4 is a detail plan view.

Corresponding parts in the several figures are indicated throughout by similar characters of reference.

In the construction of this improved machine four uprights or corner-posts are usually employed, the front posts being designated 1 1 and the rear posts 2 2. rlhese posts are suitably spaced apart and connected with each other and are extended downwardly to form the legs 3. The casing 4, which is of the ordinary construction in this class of machines, includes a fan-casing 5 and tail-boards 6. A feed-hopper 7 has also been shown as being supportedupon the casing.

he front posts l l are provided with bearings for a shaft S, carrying the fan 9, said oscillates the bell-crank lever B, thus corn-v said cross-bar, links supporting the'opposite 4o municating a laterally-vibratory movement end of said screen, a separating-screen having to the casing of the chaffing-screen. At the l one end slidably supported upon the charlingsame time by the rotation of the fan a blast screen, a rock-shaft having a crank supportis discharged against the bottom of the casl ing the opposite end ofthe separating-screen, ing underneath the separating-screen 15, l and means for vibrating the link-supported 45 the blast being discharged upwardly through l end of the chafling-screen.

the meshes ofthe cleaning-screen 15 and the 2. In a machine of the class described, a chafhng-screen 1S and also to some extent l separating-screen, a chafflng-screen slidably between the tail ends of said chafhng-screen supporting the separating-screen and extendand the grading-screen. lt will thus be obed to form a receptacle beneath the latter, a 5o served that of the material fed to the rnacrank-shaft supporting one end of the sepachine through the hopper a portion is separating-screen, a fan-shaft disposed beneath rated through the screen 15 and caused to the upper end of the separating-screen and pass over the spout 20, which extends through having a crank, a bell-crank lever supported the opening 21 in one side of the casing, the adjacent to the charting-screen, a link con- 55 portion thus separated consisting principally necting the latter with an arm of the bellof the small grain and cockle and other seeds. crank lever, a pitman connecting the other Of the material which passes over the sepaend of the bell-crank lever with the crank rating-screen 15 and onto the chafing-screen upon the fan-shaft, a pair of crank-shafts, a

portions will be blown out at the tail end of arm extending upwardly from the crank- 18 the cha and other light and worthless grading-screen supported upon the same, an 6o the machine, while the grain will drop upon shaft supporting the lower end of the gradingthe grading-screen, where it is separated into scr'een, an arm extending downwardly from two grades, one grade passing through the l the shaft supporting the upper end of the meshes of the screen and another grade beseparating-screen, a cross-arm upon the pit- 65 ing discharged over' the front end 'of the man, and links connecting said cross-arm screen, both grades beingv suitably caught with the arms extending from the crankand disposed of, as will be readily understood. shafts supporting the upper end of the sepa- As will be seen from the foregoing descriprating-screen and the lower end of the gradtion, this improved device is simple in coning-screen. 7o struction and easily operated, the results ln testimony that l claim the foregoing as having been found in practice to be highly my own l have hereto affixed my signature in efficient for the purposes intended. the presence of two witnesses.

Having thus described the invention ,what i NATHANIEL L HLL is claimed is- 1. ln a machine of the class described, a Witnesses: frame, a cross-bar in said frame, a chafngl CHARLES ALLEN, screen having a pin supported in an eye upon l WILLIAM BAUGHMAN. 

